打开fiddler之后，会自动捕获本机的http请求，以列表的形式显示在左侧
双击左侧列表中的某一个request，右侧会自动切换到Inspectors窗口。
右侧上半部分是request的raw
GET http://www.cnblogs.com/ HTTP/2.0
User-Agent: Fiddler
Host: www.cnblogs.com
右侧下半部分是response的raw
HTTP/1.1 301 Moved Permanently
Date: Mon, 14 Jan 2019 10:54:19 GMT
Content-Type: text/html; charset=UTF-8
Location: https://www.cnblogs.com/
X-UA-Compatible: IE=10
X-Frame-Options: SAMEORIGIN
Content-Length: 147
Age: 0
Via: 1.1 sapacsin05prx11.asnet.accorservices.net
<head><title>Document Moved</title></head>
<body><h1>Object Moved</h1>This document may be found <a HREF="https://www.cnblogs.com/">here</a></body>
